Exuding liquid from grain boundaries in alumina

Ravishankar, N. ; Carter, C. Barry (2001) Exuding liquid from grain boundaries in alumina Journal of American Ceramic Society, 84 (4). pp. 859-862. ISSN 0002-7820

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1151-...

Related URL: http://dx.doi.org/10.1111/j.1151-2916.2001.tb00752.x

Abstract

Bicrystals of alumina with anorthite glass in the boundary were prepared by hot pressing. Annealing of the bicrystals leads to the migration of the intergranular liquid to the free surface of the sample. It is proposed that the migration is driven by the difference in the wetting behavior of the free surface and the boundary.

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